This exploratory study was designed to assess air quality in a rural western Colorado area where residences and gas wells co-exist. Sampling was conducted before, during, and after drilling and hydraulic fracturing of a new natural gas well pad.
Weekly air sampling for 1 year revealed that the number of non-methane hydrocarbons (NMHCs) and their concentrations were highest during the initial drilling phase and did not increase during hydraulic fracturing in this closed-loop system.




The US accounted for the most requests, as it has consistently since the report was launched. US authorities asked for private details of Google users on 7,969 occasions, up from 6,321 in the last reporting period. The number is more than a third of the 20,938 requests for users' details worldwide. Google fully or partially complied with 90% of those requests.
A retired bishop has been arrested over suspicions that he sexually abused children in the 1970s and 1980s.
Brazil says it will try cloning eight animal species that are under pressure, keeping them in captivity as a reserve in case wild populations collapse.
The military is normally only too pleased to herald its successes, and to praise the courage of the men and women who put their lives on the line for their country. Perhaps it is the link (or lack of it) between these two that encourages them to talk-up certain missions, and come over all sheepish when it comes to drones.
The mystery of the expansion of sea ice around Antarctica, at the same time as global warming is melting swaths of Arctic sea ice, has been solved using data from US military satellites.





























